Wheel.



R. I. BURROWS 6L E. B. ROSS.

WHEEL.

APPLICATION FILED JAN.2. 1915. 1,265,740. Patented May14,191s.

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.ROBERT 3'. BURBIOWS AND 'EDWIN B. RGSS, 0F

BUCHANAN, .HCHGAIL ASSIGNOBS, BY

MESNE .ASSGNMENTS, T0 CLEK EQUIPTENT CQEPAIQ'Y, Gli* BUCHANAN, MCHIGAN,

A CQREQRTION O1 MICEIEGAN.

implication led January 2, i915.

To @ZZ whom t may concern:

Be it known that we, Renner J. Bnnnows and EDWIN li. Ross, citizens of the United States, residing at Buchanan, in the county or Ber-rien and State of Michigan, have invented certain new and useful Improvements in Wheels, of which the following is a speciiication, reference being had to the accompanying drawings.

Our invention relates to instal wheels, and

. it has for its object to provide an improved cast metal wheel suitable iorfuse on heavy trucks, such as automobile trucks, and which will be light but will nevertheless possess great rigidity and strength. We accomplish this object as illustrated in the drawings and as hereiuaiter described. rlhat which we believe to be new is set forth in the claims.

in the accompanying drawings,-

Figure l is a side view of our improved wheel; and

Fig. 2 is a central vertical cross-section thereof.

Referring to the drawings,-

Uur improved wheel comprises an integral cast box-like rim 3, a hub 4, a web 5 connecting the rim with the hub and a brakedrum 6 cast integral with the web 5 at one side thereof. rlhe rim 3 consists of a substantially iiat tread portion 7 adapted to receive a suitable tire, substantially radial marginal flanges 8 adjacent to the opposite side edges of the tread 7, and oppositelycurved members 9 extending Lfrom the inner marginal portions of the anges 8 to the web 5, with which they are cast integral, as shown in Fig. 2. As also shown in said tigure, the inner portion of the web 5 is joined to the hub l by curved members l0. The bralre-drlnn 6 is varranged concentrically with the hub l and is cast integral with the web 5, preferably about midway between the hub and the rim. Near the web 5 the brake-drum ,6 is thickened toorm a eirenrnterential shoulder l1, in which thickcned portion are provided passages l2 :tor the bolts by which gearing or other parts may be secured to the wheel.y

lt will be noted that the several parts oi the wheel form a unit, since they are cast integral with each other, and consequently there are no parts which can work loose. The box-like rim inherently possesses great strength since it practically forros a circular trug, and consequently the web 5 may Specification of Letters Estant.

WHEEL.

Fatented May Ms, lllid.,

serial lc. 2139.

be made relatively very light,` since it is sustained throughout by the rim structure. The purpose of providing the curved members 9 1() is to compensate for the shrinkage strains in the casting of the wheel and also to provide a certain elasticity between the hub and the rim which contributes to the successful casting of the'wheel and to its.

durability in use. By casting the brakedrum 6 integral with the web 5, the web is strengthened and the diculties of securing a separate partrigidly to it are avoided. 'lhe wheel as a whole may be made very much lighter than wooden wheels required for the same use, the dilierence in' some cases being as much .as thirty pounds, besides which our improved wheel possesses the advantage of beingv very much stronger and more durable.

That which we claim as our invention, and desire to secure by Letters Patent, is,-

l. A metal wheel, comprising a hub, a tire-supporting rim having a substantially dat tread portion and inwardly-directed substantially perpendicular anges near the margins of such tread portion and integral therewith, oppositely-disposed curved members connected with the marginal portions of vsaid flanges and extending therefrom toward and 'uniting with each other, forming an integral rim-structure box-like in crosssection, their convexsurfaoes bein toward the tread, and means connecting said curved members with the hub.

2. A metal wheel, comprising a hub, a tire-supporting rim having a substantially fiat tread portion and inwardly-directed.

substantially perpendicular iianges near the margins otsuch tread portion and integral therewith, oppcsitely-disposed curved members connected with the marginal portions of said anges and extending therefrom toward and uniting with each other, forming an integral rim-structure `box-like in crosssection, their convex surfaces being toward the tread, and a single web connecting said curved members with the hub.

3. A metal wheel, comprising a hub, a tiresupporting rim having a substantially fiat tread portion and inwardly-directed substantiallyperpendicular anges near the margins of such tread portion and integral therewith, oppositely-disposed curved mero.- bers connected with the marginal portions of said anges and extending therefrom to- 

